<template>
  <div id="aCoursesList" class="bg-fa of">
    <!-- 课程详情 开始 -->
    <section class="container">
      
    <!-- 课程所属分类 开始 -->
    <section class="path-wrap txtOf hLh30">
        <a href="#" title class="c-999 fsize14">首页</a>
        \
        <a href="/course" title class="c-999 fsize14">课程列表</a>
        \
        <span class="c-333 fsize14">{{ course.subjectLevelOne }}</span>
        \
        <span class="c-333 fsize14">{{ course.subjectLevelTwo }}</span>
    </section>
    <!-- /课程所属分类 结束 -->
    <!-- 课程基本信息 开始 -->
    <div>
        <article class="c-v-pic-wrap" style="height: 357px;">
            <section id="videoPlay" class="p-h-video-box">
                <img :src="course.cover" height="357px" :alt="course.title" class="dis c-v-pic">
            </section>
        </article>
        <aside class="c-attr-wrap">
            <section class="ml20 mr15">
                <h2 class="hLh30 txtOf mt15">
                    <span class="c-fff fsize24">{{ course.title }}</span>
                </h2>
                <section class="c-attr-jg" v-if="course.price == 0">
                    <span class="c-fff">价格：</span>
                    <b class="c-yellow" style="font-size:24px;">免费</b>
                </section>
                <section class="c-attr-jg" v-if="course.price != 0">
                    <span class="c-fff">价格：</span>
                    <b class="c-yellow" style="font-size:24px;">￥{{ course.price }}</b>
                </section>
                <section class="c-attr-mt c-attr-undis">
                    <span class="c-fff fsize14">主讲： {{ course.teacherName }}&nbsp;&nbsp;&nbsp;</span>
                </section>
                <section class="c-attr-mt of">
                    <span class="ml10 vam">
                        <em class="icon18 scIcon"/>
                        <a class="c-fff vam" title="收藏" href="#" >收藏</a>
                    </span>
                </section>
               
                <section v-if="isbuy || Number(course.price)===0" class="c-attr-mt">
                            <a href="" title="立即观看"  class="comm-btn c-btn-3" >立即观看</a>
                </section>
                <section v-else class="c-attr-mt">
                    <a href="#" title="立即购买" class="comm-btn c-btn-3" @click="createOrder()">立即购买</a>
                </section>
            </section>
        </aside>
        <aside class="thr-attr-box">
            <ol class="thr-attr-ol">
                <li>
                    <p>&nbsp;</p>
                    <aside>
                        <span class="c-fff f-fM">购买数</span>
                        <br>
                        <h6 class="c-fff f-fM mt10">{{ course.buyCount }}</h6>
                    </aside>
                </li>
                <li>
                    <p>&nbsp;</p>
                    <aside>
                        <span class="c-fff f-fM">课时数</span>
                        <br>
                        <h6 class="c-fff f-fM mt10">{{ course.lessonNum }}</h6>
                    </aside>
                </li>
                <li>
                    <p>&nbsp;</p>
                    <aside>
                        <span class="c-fff f-fM">浏览数</span>
                        <br>
                        <h6 class="c-fff f-fM mt10">{{ course.viewCount }}</h6>
                    </aside>
                </li>
            </ol>
        </aside>
        <div class="clear"/>
    </div>
    <!-- /课程基本信息 结束 -->
      <div class="mt20 c-infor-box">
        <article class="fl col-7">
          <section class="mr30">
            <div class="i-box">
              <div>
                <section id="c-i-tabTitle" class="c-infor-tabTitle c-tab-title">
                  <a name="c-i" class="current" title="课程详情">课程详情</a>
                </section>
              </div>
              <article class="ml10 mr10 pt20">
                <!-- 课程详情介绍 开始 -->
                <div>
                    <h6 class="c-i-content c-infor-title">
                        <span>课程介绍</span>
                    </h6>
                    <div class="course-txt-body-wrap">
                        <section class="course-txt-body">
                            <!-- 将内容中的html翻译过来 -->
                            <p v-html="course.description">{{ course.description }}</p>
                        </section>
                    </div>
                </div>
                <!-- /课程详情介绍 结束 -->
                <!-- 课程大纲 开始-->
                <div class="mt50">
                    <h6 class="c-g-content c-infor-title">
                        <span>课程大纲</span>
                    </h6>
                    <section class="mt20">
                        <div class="lh-menu-wrap">
                            <menu id="lh-menu" class="lh-menu mt10 mr10">
                                <ul>
                                    <!-- 课程章节目录 -->
                                    <li v-for="chapter in chapterList" :key="chapter.id" class="lh-menu-stair">
                                        <a :title="chapter.title" href="javascript: void(0)" class="current-1">
                                            <em class="lh-menu-i-1 icon18 mr10"/>{{ chapter.title }}
                                        </a>
                                        <ol class="lh-menu-ol" style="display: block;">
                                            <li v-for="video in chapter.children" :key="video.id" class="lh-menu-second ml30">
                                                <a :href="'/player/'+video.videoSourceId" :title="video.title" target="_blank">
                                                    <span v-if="video.free === true" class="fr">
                                                        <i class="free-icon vam mr10">免费试听</i>
                                                    </span>
                                                    <em class="lh-menu-i-2 icon16 mr5">&nbsp;</em>{{ video.title }}
                                                </a>
                                            </li>
                                        </ol>
                                    </li>
                                </ul>
                            </menu>
                        </div>
                    </section>
                </div>
                    <!-- /课程大纲 结束 -->
              </article>
            </div>
          </section>
        </article>
        <aside class="fl col-3">
          <div class="i-box">
            <!-- 主讲讲师 开始-->
            <div>
                <section class="c-infor-tabTitle c-tab-title">
                    <a title href="javascript:void(0)">主讲讲师</a>
                </section>
                <section class="stud-act-list">
                    <ul style="height: auto;">
                        <li>
                            <div class="u-face">
                                <a :href="'/teacher/'+course.teacherId" target="_blank">
                                    <img :src="course.avatar" width="50" height="50" alt>
                                </a>
                            </div>
                            <section class="hLh30 txtOf">
                                <a :href="'/teacher/'+course.teacherId" class="c-333 fsize16 fl" target="_blank">{{ course.teacherName }}</a>
                            </section>
                            <section class="hLh20 txtOf">
                                <span class="c-999">{{ course.intro }}</span>
                            </section>
                        </li>
                    </ul>
                </section>
            </div>
            <!-- /主讲讲师 结束 -->

          </div>
        </aside>
        <div class="clear"/>
      </div>
    </section>
    <!-- /课程详情 结束 -->
  </div>
</template>

<script>
import course from "@/api/course"
import order from "@/api/order"

export default {
//   asyncData({ params, error }) {
//     return course.getById(params.id).then(response => {
//         console.log(JSON.stringify(response.data.data.course));
//         // console.log(response.data.data.chapterVoList.children);   //里面是对象集合
//         return { 
//         course: response.data.data.course,
//         chapterList: response.data.data.chapterVoList
//       }
//     })
//   },
//   methods:{
//     //根据课程id，调用接口方法生成订单
//     createOrder(){
//         order.createOrder(this.course.id).then(response => {
//             if(response.data.success){
//                 //订单创建成功，跳转到订单页面
//                 this.$router.push({ path: '/order/'+ response.data.data.orderId })
//             }
//         })
//     },
// }
// }
 asyncData({ params, error }) {
    return {courseId: params.id}
    
  },
  data() {
    return {
          course: {},
          chapterList: [],
          isbuy: false,
    }
  },
  created() {
    this.initCourseInfo()
  },
  methods:{
    initCourseInfo() {
      course.getById(this.courseId)   //通过课程id获取当前课程 章节 购买信息
        .then(response => {
          this.course=response.data.data.course,
          this.chapterList=response.data.data.chapterVoList,
          this.isbuy=response.data.data.isbuy
        })
    },
    createOrder(){
      course.createOrder(this.courseId).then(response => {
        if(response.data.success){
            this.$router.push({ path: '/order/'+ response.data.data.orderId })
        }
      })
    }
  }
};
</script>
